Test Variables

Variable Value Unit Uncertainty Symbol
Resistance at the beginning of the test15.39Ω0.001R1
Resistance at the end of the testRegression at t=0ΩFit parameters uncertaintyR2
Ambient temperature at the beginning of the test24°C0.1Tamb,1
Ambient temperature at the end of the test24°C0.1Tamb,2
Reciprocal of the coefficient of temperature234.5°C-k
Test temperature difference Calculated °C Calculated ΔT
Winding temperature at the end of the test Calculated °C Calculated T2

Other variables:

  • Uncertainty of initial time μt0 (s): 1
  • Uncertainty of acquisition time μdt (s): 0.001
  • Uncertainty of resistance measurement μdR (Ω): 0.001

    • Model 1: 19.425- 0.0266x

    051015202530354018.418.618.81919.219.4
    Original data with uncertaintyEstimation uncertaintyODR EstimationTime [s]Resistance [Ω]

    Model 2: 19.52- 0.0381x+ 0.00026x2

    051015202530354018.418.618.81919.219.4
    Original data with uncertaintyEstimation uncertaintyODR EstimationTime [s]Resistance [Ω]

    Model 3: 19.534- 0.041x+ 0.000413x2- 2.31e-06x3

    051015202530354018.418.618.81919.219.419.6
    Original data with uncertaintyEstimation uncertaintyODR EstimationTime [s]Resistance [Ω]

    Model 4: 17.472 + 2.06*e-0.0197x

    051015202530354018.418.618.81919.219.419.6
    Original data with uncertaintyEstimation uncertaintyODR EstimationTime [s]Resistance [Ω]

    Model comparison

    051015202530354018.418.618.81919.219.4
    Model 1Model 2Model 3Model 4Original data with uncertaintyTime [s]Resistance [Ω]
    Model Type Degree SSE Resistance Uncertainty Temperature Temperature Uncertainty
    poly 1 14838.894675 19.425299 0.015212 30.292863 0.248480
    poly 2 144.351196 19.520036 0.002812 30.708960 0.247951
    poly 3 39.808633 19.533684 0.002656 31.000375 0.248031
    exp 0 44.816390 19.531279 0.047946 31.265402 0.261855